Welcome to the world of unforgiving bows.That's not to say it can't be shot accurately but EVERYTHING must be perfect.
One problem that can occur when a bows centershot isn't perfect is throwing arrows out left or right.Take a look at my thread and check to see if you have it set correctly.
http://www.huntingnet.com/forum/tm.aspx?m=2020182
FORM is also very critical when shooting,especially high reflex bows.Being too short or too long on draw can both cause lefts and rights.
The first video I am about a 1/4" long on draw but the form is good.Look at my shoulders and the surprise release.The elbow is pretty much in line with the arrow straight back.
http://youtube.com/watch?v=YdXv0cKiFC8
This video,I am about a 1/4" short.You can see my front shoulder start to creep up on me and what you can't see is my back elbow(release arm) is starting to drift out toward the camera and not straight back.
I am actually shooting this draw length but tied on a longer loop and adjusted my anchor downslightly and the results were amazing.
http://youtube.com/watch?v=YYwcNVjcjgU